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1 /* | |
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) | |
3 * (C) 2000 Antti Koivisto (koivisto@kde.org) | |
4 * (C) 2000 Dirk Mueller (mueller@kde.org) | |
5 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. | |
6 * | |
7 * This library is free software; you can redistribute it and/or | |
8 * modify it under the terms of the GNU Library General Public | |
9 * License as published by the Free Software Foundation; either | |
10 * version 2 of the License, or (at your option) any later version. | |
11 * | |
12 * This library is distributed in the hope that it will be useful, | |
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 * Library General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Library General Public License | |
18 * along with this library; see the file COPYING.LIB. If not, write to | |
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
20 * Boston, MA 02110-1301, USA. | |
21 * | |
22 */ | |
23 | |
24 #ifndef StyleImage_h | |
25 #define StyleImage_h | |
26 | |
27 #include "core/css/CSSValue.h" | |
28 #include "platform/geometry/IntSize.h" | |
29 #include "platform/geometry/LayoutSize.h" | |
30 #include "platform/graphics/Image.h" | |
31 #include "wtf/PassRefPtr.h" | |
32 #include "wtf/RefCounted.h" | |
33 #include "wtf/RefPtr.h" | |
34 | |
35 namespace blink { | |
36 | |
37 class ImageResource; | |
38 class CSSValue; | |
39 class LayoutObject; | |
40 | |
41 typedef void* WrappedImagePtr; | |
42 | |
43 class StyleImage : public RefCounted<StyleImage> { | |
44 public: | |
45 virtual ~StyleImage() { } | |
46 | |
47 bool operator==(const StyleImage& other) const | |
48 { | |
49 return data() == other.data(); | |
50 } | |
51 | |
52 virtual PassRefPtrWillBeRawPtr<CSSValue> cssValue() const = 0; | |
53 | |
54 virtual bool canRender(const LayoutObject&, float /*multiplier*/) const { re
turn true; } | |
55 virtual bool isLoaded() const { return true; } | |
56 virtual bool errorOccurred() const { return false; } | |
57 virtual LayoutSize imageSize(const LayoutObject*, float multiplier) const =
0; | |
58 virtual void computeIntrinsicDimensions(const LayoutObject*, Length& intrins
icWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) = 0; | |
59 virtual bool imageHasRelativeWidth() const = 0; | |
60 virtual bool imageHasRelativeHeight() const = 0; | |
61 virtual bool usesImageContainerSize() const = 0; | |
62 virtual void setContainerSizeForLayoutObject(const LayoutObject*, const IntS
ize&, float) = 0; | |
63 virtual void addClient(LayoutObject*) = 0; | |
64 virtual void removeClient(LayoutObject*) = 0; | |
65 virtual PassRefPtr<Image> image(LayoutObject*, const IntSize&) const = 0; | |
66 virtual WrappedImagePtr data() const = 0; | |
67 virtual float imageScaleFactor() const { return 1; } | |
68 virtual bool knownToBeOpaque(const LayoutObject*) const = 0; | |
69 virtual ImageResource* cachedImage() const { return 0; } | |
70 | |
71 ALWAYS_INLINE bool isImageResource() const { return m_isImageResource; } | |
72 ALWAYS_INLINE bool isPendingImage() const { return m_isPendingImage; } | |
73 ALWAYS_INLINE bool isGeneratedImage() const { return m_isGeneratedImage; } | |
74 ALWAYS_INLINE bool isImageResourceSet() const { return m_isImageResourceSet;
} | |
75 | |
76 protected: | |
77 StyleImage() | |
78 : m_isImageResource(false) | |
79 , m_isPendingImage(false) | |
80 , m_isGeneratedImage(false) | |
81 , m_isImageResourceSet(false) | |
82 { | |
83 } | |
84 bool m_isImageResource:1; | |
85 bool m_isPendingImage:1; | |
86 bool m_isGeneratedImage:1; | |
87 bool m_isImageResourceSet:1; | |
88 }; | |
89 | |
90 #define DEFINE_STYLE_IMAGE_TYPE_CASTS(thisType, function) \ | |
91 DEFINE_TYPE_CASTS(thisType, StyleImage, styleImage, styleImage->function, st
yleImage.function); \ | |
92 inline thisType* to##thisType(const RefPtr<StyleImage>& styleImage) { return
to##thisType(styleImage.get()); } \ | |
93 typedef int NeedsSemiColonAfterDefineStyleImageTypeCasts | |
94 | |
95 } | |
96 #endif | |
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